client/src/components/BaseGame.vue

   1 <template lang="pug">
   2 div#baseGame(
   3   tabindex=-1
   4   @click="focusBg()"
   5   @keydown="handleKeys($event)"
   6   @wheel="handleScroll($event)"
   7 )
   8   input#modalEog.modal(type="checkbox")
   9   div#eogDiv(
  10     role="dialog"
  11     data-checkbox="modalEog"
  12   )
  13     .card.text-center
  14       label.modal-close(for="modalEog")
  15       h3.section {{ endgameMessage }}
  16   input#modalAdjust.modal(type="checkbox")
  17   div#adjuster(
  18     role="dialog"
  19     data-checkbox="modalAdjust"
  20   )
  21     .card.text-center
  22       label.modal-close(for="modalAdjust")
  23       label(for="boardSize") {{ st.tr["Board size"] }}
  24       input#boardSize.slider(
  25         type="range"
  26         min="0"
  27         max="100"
  28         value="50"
  29         @input="adjustBoard()"
  30       )
  31   #gameContainer
  32     #boardContainer
  33       Board(
  34         :vr="vr"
  35         :last-move="lastMove"
  36         :analyze="analyze"
  37         :user-color="game.mycolor"
  38         :orientation="orientation"
  39         :vname="game.vname"
  40         :incheck="incheck"
  41         @play-move="play"
  42       )
  43       #turnIndicator(v-if="game.vname=='Dark' && game.score=='*'")
  44         | {{ st.tr[vr.turn + " to move"] }}
  45       #controls
  46         button(@click="gotoBegin()") <<
  47         button(@click="undo()") <
  48         button(@click="flip()") &#8645;
  49         button(@click="play()") >
  50         button(@click="gotoEnd()") >>
  51       #belowControls
  52         #downloadDiv(v-if="game.vname!='Dark' || game.score!='*'")
  53           a#download(href="#")
  54           button(@click="download()") {{ st.tr["Download"] }} PGN
  55         button(onClick="window.doClick('modalAdjust')") &#10530;
  56         button(
  57           v-if="game.vname!='Dark' && game.mode!='analyze'"
  58           @click="analyzePosition()"
  59         )
  60           | {{ st.tr["Analyse"] }}
  61         // NOTE: rather ugly hack to avoid showing twice "rules" link...
  62         button(
  63           v-if="!$route.path.match('/variants/')"
  64           @click="showRules()"
  65         )
  66           | {{ st.tr["Rules"] }}
  67     #movesList
  68       MoveList(
  69         v-if="showMoves"
  70         :score="game.score"
  71         :message="game.scoreMsg"
  72         :firstNum="firstMoveNumber"
  73         :moves="moves"
  74         :cursor="cursor"
  75         @goto-move="gotoMove"
  76       )
  77     .clearer
  78 </template>
  79
  80 <script>
  81 import Board from "@/components/Board.vue";
  82 import MoveList from "@/components/MoveList.vue";
  83 import { store } from "@/store";
  84 import { getSquareId } from "@/utils/squareId";
  85 import { getDate } from "@/utils/datetime";
  86 import { processModalClick } from "@/utils/modalClick";
  87 import { getScoreMessage } from "@/utils/scoring";
  88 export default {
  89   name: "my-base-game",
  90   components: {
  91     Board,
  92     MoveList
  93   },
  94   // "vr": VariantRules object, describing the game state + rules
  95   props: ["vr", "game"],
  96   data: function() {
  97     return {
  98       st: store.state,
  99       // NOTE: all following variables must be reset at the beginning of a game
 100       endgameMessage: "",
 101       orientation: "w",
 102       score: "*", //'*' means 'unfinished'
 103       moves: [],
 104       cursor: -1, //index of the move just played
 105       lastMove: null,
 106       firstMoveNumber: 0, //for printing
 107       incheck: [] //for Board
 108     };
 109   },
 110   watch: {
 111     // game initial FEN changes when a new game starts
 112     "game.fenStart": function() {
 113       this.re_setVariables();
 114     },
 115     // Received a new move to play:
 116     "game.moveToPlay": function(move) {
 117       if (move) this.play(move, "receive");
 118     },
 119     // ...Or to undo (corr game, move not validated)
 120     "game.moveToUndo": function(move) {
 121       if (move) this.undo(move);
 122     }
 123   },
 124   computed: {
 125     showMoves: function() {
 126       return this.game.vname != "Dark" || this.game.score != "*";
 127     },
 128     analyze: function() {
 129       return (
 130         this.game.mode == "analyze" ||
 131         // From Board viewpoint, a finished Dark game == analyze (TODO: unclear)
 132         (this.game.vname == "Dark" && this.game.score != "*")
 133       );
 134     }
 135   },
 136   created: function() {
 137     if (this.game.fenStart) this.re_setVariables();
 138   },
 139   mounted: function() {
 140     [
 141       document.getElementById("eogDiv"),
 142       document.getElementById("adjuster")
 143     ].forEach(elt => elt.addEventListener("click", processModalClick));
 144     // Take full width on small screens:
 145     let boardSize = parseInt(localStorage.getItem("boardSize"));
 146     if (!boardSize) {
 147       boardSize =
 148         window.innerWidth >= 768
 149           ? 0.75 * Math.min(window.innerWidth, window.innerHeight)
 150           : window.innerWidth;
 151     }
 152     const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 153     document.getElementById("boardContainer").style.width = boardSize + "px";
 154     let gameContainer = document.getElementById("gameContainer");
 155     gameContainer.style.width = boardSize + movesWidth + "px";
 156     document.getElementById("boardSize").value =
 157       (boardSize * 100) / (window.innerWidth - movesWidth);
 158     // timeout to avoid calling too many time the adjust method
 159     let timeoutLaunched = false;
 160     window.addEventListener("resize", () => {
 161       if (!timeoutLaunched) {
 162         timeoutLaunched = true;
 163         setTimeout(() => {
 164           this.adjustBoard();
 165           timeoutLaunched = false;
 166         }, 500);
 167       }
 168     });
 169   },
 170   methods: {
 171     focusBg: function() {
 172       document.getElementById("baseGame").focus();
 173     },
 174     adjustBoard: function() {
 175       const boardContainer = document.getElementById("boardContainer");
 176       if (!boardContainer) return; //no board on page
 177       const k = document.getElementById("boardSize").value;
 178       const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 179       const minBoardWidth = 240; //TODO: these 240 and 280 are arbitrary...
 180       // Value of 0 is board min size; 100 is window.width [- movesWidth]
 181       const boardSize =
 182         minBoardWidth +
 183         (k * (window.innerWidth - (movesWidth + minBoardWidth))) / 100;
 184       localStorage.setItem("boardSize", boardSize);
 185       boardContainer.style.width = boardSize + "px";
 186       document.getElementById("gameContainer").style.width =
 187         boardSize + movesWidth + "px";
 188     },
 189     handleKeys: function(e) {
 190       if ([32, 37, 38, 39, 40].includes(e.keyCode)) e.preventDefault();
 191       switch (e.keyCode) {
 192         case 37:
 193           this.undo();
 194           break;
 195         case 39:
 196           this.play();
 197           break;
 198         case 38:
 199           this.gotoBegin();
 200           break;
 201         case 40:
 202           this.gotoEnd();
 203           break;
 204         case 32:
 205           this.flip();
 206           break;
 207       }
 208     },
 209     handleScroll: function(e) {
 210       // NOTE: since game.mode=="analyze" => no score, next condition is enough
 211       if (this.game.score != "*") {
 212         e.preventDefault();
 213         if (e.deltaY < 0) this.undo();
 214         else if (e.deltaY > 0) this.play();
 215       }
 216     },
 217     showRules: function() {
 218       //this.$router.push("/variants/" + this.game.vname);
 219       window.open("#/variants/" + this.game.vname, "_blank"); //better
 220     },
 221     re_setVariables: function() {
 222       this.endgameMessage = "";
 223       this.orientation = this.game.mycolor || "w"; //default orientation for observed games
 224       this.moves = JSON.parse(JSON.stringify(this.game.moves || []));
 225       // Post-processing: decorate each move with color + current FEN:
 226       // (to be able to jump to any position quickly)
 227       let vr_tmp = new V(this.game.fenStart); //vr is already at end of game
 228       this.firstMoveNumber = Math.floor(
 229         V.ParseFen(this.game.fenStart).movesCount / 2
 230       );
 231       this.moves.forEach(move => {
 232         // NOTE: this is doing manually what play() function below achieve,
 233         // but in a lighter "fast-forward" way
 234         move.color = vr_tmp.turn;
 235         move.notation = vr_tmp.getNotation(move);
 236         vr_tmp.play(move);
 237         move.fen = vr_tmp.getFen();
 238       });
 239       if (
 240         (this.moves.length > 0 && this.moves[0].color == "b") ||
 241         (this.moves.length == 0 && vr_tmp.turn == "b")
 242       ) {
 243         // 'end' is required for Board component to check lastMove for e.p.
 244         this.moves.unshift({
 245           color: "w",
 246           notation: "...",
 247           end: { x: -1, y: -1 }
 248         });
 249       }
 250       const L = this.moves.length;
 251       this.cursor = L - 1;
 252       this.lastMove = L > 0 ? this.moves[L - 1] : null;
 253       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 254     },
 255     analyzePosition: function() {
 256       const newUrl =
 257         "/analyse/" +
 258         this.game.vname +
 259         "/?fen=" +
 260         this.vr.getFen().replace(/ /g, "_");
 261       // Open in same tab in live games (against cheating)
 262       if (this.game.type == "live") this.$router.push(newUrl);
 263       else window.open("#" + newUrl);
 264     },
 265     download: function() {
 266       const content = this.getPgn();
 267       // Prepare and trigger download link
 268       let downloadAnchor = document.getElementById("download");
 269       downloadAnchor.setAttribute("download", "game.pgn");
 270       downloadAnchor.href =
 271         "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 272       downloadAnchor.click();
 273     },
 274     getPgn: function() {
 275       let pgn = "";
 276       pgn += '[Site "vchess.club"]\n';
 277       pgn += '[Variant "' + this.game.vname + '"]\n';
 278       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 279       pgn += '[White "' + this.game.players[0].name + '"]\n';
 280       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 281       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 282       pgn += '[Result "' + this.game.score + '"]\n\n';
 283       let counter = 1;
 284       let i = 0;
 285       while (i < this.moves.length) {
 286         pgn += counter++ + ".";
 287         for (let color of ["w", "b"]) {
 288           let move = "";
 289           while (i < this.moves.length && this.moves[i].color == color)
 290             move += this.moves[i++].notation + ",";
 291           move = move.slice(0, -1); //remove last comma
 292           pgn += move + (i < this.moves.length ? " " : "");
 293         }
 294       }
 295       return pgn + "\n";
 296     },
 297     showEndgameMsg: function(message) {
 298       this.endgameMessage = message;
 299       let modalBox = document.getElementById("modalEog");
 300       modalBox.checked = true;
 301       setTimeout(() => {
 302         modalBox.checked = false;
 303       }, 2000);
 304     },
 305     animateMove: function(move, callback) {
 306       let startSquare = document.getElementById(getSquareId(move.start));
 307       let endSquare = document.getElementById(getSquareId(move.end));
 308       let rectStart = startSquare.getBoundingClientRect();
 309       let rectEnd = endSquare.getBoundingClientRect();
 310       let translation = {
 311         x: rectEnd.x - rectStart.x,
 312         y: rectEnd.y - rectStart.y
 313       };
 314       let movingPiece = document.querySelector(
 315         "#" + getSquareId(move.start) + " > img.piece"
 316       );
 317       // HACK for animation (with positive translate, image slides "under background")
 318       // Possible improvement: just alter squares on the piece's way...
 319       const squares = document.getElementsByClassName("board");
 320       for (let i = 0; i < squares.length; i++) {
 321         let square = squares.item(i);
 322         if (square.id != getSquareId(move.start)) square.style.zIndex = "-1";
 323       }
 324       movingPiece.style.transform =
 325         "translate(" + translation.x + "px," + translation.y + "px)";
 326       movingPiece.style.transitionDuration = "0.25s";
 327       movingPiece.style.zIndex = "3000";
 328       setTimeout(() => {
 329         for (let i = 0; i < squares.length; i++)
 330           squares.item(i).style.zIndex = "auto";
 331         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 332         callback();
 333       }, 250);
 334     },
 335     play: function(move, receive) {
 336       // NOTE: navigate and receive are mutually exclusive
 337       const navigate = !move;
 338       // Forbid playing outside analyze mode, except if move is received.
 339       // Sufficient condition because Board already knows which turn it is.
 340       if (
 341         !navigate &&
 342         this.game.mode != "analyze" &&
 343         !receive &&
 344         (this.game.score != "*" || this.cursor < this.moves.length - 1)
 345       ) {
 346         return;
 347       }
 348       const doPlayMove = () => {
 349         // To play a move, cursor must be at the end of the game:
 350         if (!!receive && this.cursor < this.moves.length - 1) this.gotoEnd();
 351         if (navigate) {
 352           if (this.cursor == this.moves.length - 1) return; //no more moves
 353           move = this.moves[this.cursor + 1];
 354         } else {
 355           move.color = this.vr.turn;
 356           move.notation = this.vr.getNotation(move);
 357         }
 358         this.vr.play(move);
 359         this.cursor++;
 360         this.lastMove = move;
 361         if (this.st.settings.sound == 2)
 362           new Audio("/sounds/move.mp3").play().catch(() => {});
 363         if (!navigate) {
 364           move.fen = this.vr.getFen();
 365           // Stack move on movesList at current cursor
 366           if (this.cursor == this.moves.length) this.moves.push(move);
 367           else this.moves = this.moves.slice(0, this.cursor).concat([move]);
 368         }
 369         // Is opponent in check?
 370         this.incheck = this.vr.getCheckSquares(this.vr.turn);
 371         const score = this.vr.getCurrentScore();
 372         if (score != "*") {
 373           const message = getScoreMessage(score);
 374           if (this.game.mode != "analyze")
 375             this.$emit("gameover", score, message);
 376           //just show score on screen (allow undo)
 377           else this.showEndgameMsg(score + " . " + message);
 378         }
 379         if (!navigate && this.game.mode != "analyze")
 380           this.$emit("newmove", move); //post-processing (e.g. computer play)
 381       };
 382       if (!!receive && this.game.vname != "Dark")
 383         this.animateMove(move, doPlayMove);
 384       else doPlayMove();
 385     },
 386     undo: function(move) {
 387       const navigate = !move;
 388       if (navigate) {
 389         if (this.cursor < 0) return; //no more moves
 390         move = this.moves[this.cursor];
 391       }
 392       this.vr.undo(move);
 393       this.cursor--;
 394       this.lastMove = this.cursor >= 0 ? this.moves[this.cursor] : undefined;
 395       if (this.st.settings.sound == 2)
 396         new Audio("/sounds/undo.mp3").play().catch(() => {});
 397       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 398       if (!navigate) this.moves.pop();
 399     },
 400     gotoMove: function(index) {
 401       this.vr.re_init(this.moves[index].fen);
 402       this.cursor = index;
 403       this.lastMove = this.moves[index];
 404     },
 405     gotoBegin: function() {
 406       if (this.cursor == -1) return;
 407       this.vr.re_init(this.game.fenStart);
 408       if (this.moves.length > 0 && this.moves[0].notation == "...") {
 409         this.cursor = 0;
 410         this.lastMove = this.moves[0];
 411       } else {
 412         this.cursor = -1;
 413         this.lastMove = null;
 414       }
 415     },
 416     gotoEnd: function() {
 417       if (this.cursor == this.moves.length - 1) return;
 418       this.gotoMove(this.moves.length - 1);
 419     },
 420     flip: function() {
 421       this.orientation = V.GetOppCol(this.orientation);
 422     }
 423   }
 424 };
 425 </script>
 426
 427 <style lang="sass" scoped>
 428 [type="checkbox"]#modalEog+div .card
 429   min-height: 45px
 430
 431 [type="checkbox"]#modalAdjust+div .card
 432   padding: 5px
 433
 434 #baseGame
 435   width: 100%
 436   &:focus
 437     outline: none
 438
 439 #gameContainer
 440   margin-left: auto
 441   margin-right: auto
 442
 443 #downloadDiv
 444   display: inline-block
 445
 446 #controls
 447   margin: 0 auto
 448   button
 449     display: inline-block
 450     width: 20%
 451     margin: 0
 452
 453 #turnIndicator
 454   text-align: center
 455
 456 #belowControls
 457   border-top: 1px solid #2f4f4f
 458   text-align: center
 459   margin: 0 auto
 460   & > #downloadDiv
 461     margin: 0
 462     & > button
 463       margin: 0
 464   & > button
 465     border-left: 1px solid #2f4f4f
 466     margin: 0
 467
 468 #boardContainer
 469   float: left
 470 // TODO: later, maybe, allow movesList of variable width
 471 // or e.g. between 250 and 350px (but more complicated)
 472
 473 #movesList
 474   width: 280px
 475   float: left
 476
 477 @media screen and (max-width: 767px)
 478   #movesList
 479     width: 100%
 480     float: none
 481     clear: both
 482 </style>